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Seasonal Cycle of Jassa Marmorata Holmes, 1903 (Amphipoda) in the Ligurian Sea (Mediterranean, Italy)

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Abstract This paper describes the life cycle of the amphipod Jassa marmorata with data recorded over two years (from May 2002 to April 2004) in the Marine Protected Area of Portofino (Ligurian Sea, Italy). The population was sampled monthly at 5 m depth on artificial substrata. For each sample, the number of males, females, ovigerous females, and juveniles was recorded and related to water temperature. Two kinds of males, minor and major, were found, distinguishable by the presence of a thumb on the second gnathopod. The sex-ratio was significantly biased towards females (F:M = 5.6:1). The cycle revealed a female increase in mean body size during the cold season (late winter and early spring). This resulted in a peak in recruitment during the spring; females are fertile all through the year, but egg production is positively correlated with female size. During the summer of 2003, an anomalous increase in sea-water temperature was recorded. In this period the population completely disappeared, but the density during the next winter recovered again to usual values.

Affiliations: 1: a (CC, correspondence:; AS, MM) Dipartimento per lo Studio del Territorio e delle sue Risorse, Università di Genova, Europa, 26, I-16132, Genova, Italy ; 2: b (CB) Department of Biological Sciences, Kent State University, Kent, Ohio 44242-0001, U.S.A


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1. Bellan-Santini D. 1989 "Ecology,." pp. 869-893. In, S. Ruffo (ed.), The Amphipoda of the Mediterranean. Part 2. Mmoires De L'Institut Ocanographique Monaco 13
2. Boero F. , Carli A. 1979 "Osservazioni sul comportamento dell'anfipode Jassa falcata (Montagu)." Bollettino del Museo Civico di Storia Naturale di Verona Vol VI 147 153
3. Borowsky B. 1985 "Differences in reproductive behavior between two male morphs of the amphipod crustacean Jassa falcata Montagu." Physiological Zoology Vol 58 497 502
4. Cerrano C. , Bavestrello G. , Bianchi C. N. , Cattaneo-Vietti R. , Bava S. , Morganti C. , Morri C. , Picco P. , Sara G. , Schiaparelli S. , Siccardi A. , Sponga F. 2000 "A catastrophic mass-mortality episode of gorgonians and other organisms in the Ligurian Sea (NW Mediterranean), summer 1999." Ecology Letters Vol 3 284 293
5. Clark R. A. 1997 "Dimorphic males display alternative reproductive strategies in the marine amphipod Jassa marmorata Holmes (Corophioidea: Ischyroceridae)." Ethology Vol 103 531 553
6. Clark R. , Caudill C. C. 2001 "Females of the marine amphipod Jassa marmorata mate multiple times with the same or different males." Marine and Freshwater Behaviour and Physiology Vol 34 131 138
7. Conlan K. E. 1989 "Delayed reproduction and adult dimorphism in males of the amphipod genus Jassa (Corophioidea, Ischyroceridae)an explanation for systematic confusion." Journal of Crustacean Biology Vol 9 601 625
8. Conlan K. E. 1990 "Revision of the crustacean amphipod genus Jassa Leach (Corophioidea, Ischyroceridae)." Canadian Journal of Zoology-Revue Canadienne De Zoologie Vol 68 2031 2075
9. Conlan K. E. 1991 "Precopulatory mating behavior and sexual dimorphism in the amphipod crustacea." Hydrobiologia Vol 223 255 282
10. Dauvin J. C. , Bellan-Santini D. 2002 "Benthic amphipoda gammaridea from the french coast: A review of current knowledge." Crustaceana Vol 75 299 340
11. Diviacco G. 1980 "Osservazioni sui crostacei anfipodi del porto di Genova." Memorie di Biologia Marina e oceanografia, Supplemento Vol X 387 388
12. Dixon I. M T. , Moore P. G. 1997 "A comparative study on the tubes and feeling behaviour of eight species of corophioid Amphipoda and their bearing on phylogenetic relationships within the Corophioidea." Philosophical Transactions of the Royal Society of London B Vol 352 93 112
13. Franz D. R. , Mohamed Y. 1989 "Short distance dispersal in a fouling community amphipod crustacean, Jassa marmorata Holmes." Journal of Experimental Marine Biology and Ecology Vol 133 1 13
14. Franz D. R. 1989 "Population density and demography of a fouling community amphipod." Journal of Experimental Marine Biology and Ecology Vol 125 117 136
15. Kevrekidis T. 2004 "Population dynamics, growth and reproduction of Corophium insidiosum (Crustacea: Amphipoda) at low salinities in Monolimmi lagoon (Evros Delta, North Aegean Sea)." Hydrobiologia Vol 522 117 132
16. Kurdziel J. P. , Knowles L. L. 2002 "The mechanisms of morph determination in the amphipod Jassa: implications for the evolution of alternative male phenotypes." Proceedings of the Royal Society of London Series B-Biological Sciences Vol 269 1749 1754
17. Myers A. A. 1989 "Family Ischyroceridae,." pp. 432-440. In, S. Ruffo (ed.), The Amphipoda of the Mediterranean. Part 2. Mmoires De L'Institut Ocanographique Monaco 13
18. Nair K. K C. , Anger K. 1980 "Seasonal variation in population structure and biochemical composition of Jassa falcata (Crustacea, Amphipoda) off the island of Helgoland (North-Sea)." Estuarine and Coastal Marine Science Vol 11 505 513
19. Wilson W. H. , Parker K. 1996 "The life history of the amphipod, Corophium volutator: The effects of temperature and shorebird predation." Journal of Experimental Marine Biology and Ecology Vol 196 239 250

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